In an effort to preserve the history of the Early Fox Era, FEP covers the following vehicles: 79-86 Mustang and Capri, 84-86 Mustang SVO, 78-83 Fairmont & Zephyr, 83-86 LTD & Marquis, 80-88 Thunderbird & Cougar, 82-87 Continental, 84-92 Mark VII, 81-82 Granada. Yeah, except those. a) ain't early and b) aren't 289 heads. Its increase while significant is still only about that of a decent 351 w, hi im building a nastalgic car so im not going to drag race it but it must go ok ive got a 302 windsor basicly recoed stock but i want to run tunnel rams to go with the the3am would like to put choppy cam and replace the heads any ideas would be much apprecited thankyou, What is the stock head cc of a 1992 f150 302 windsor. Required fields are marked *. I think one of the finer traits of a true car guy, is the patience to put a prized car away and just let it sit for a while rather than selling it when life gets in the way. The Fora platform includes forum software by XenForo. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. What would be the best cam and springs to use for these heads in a 302 Windsor? Best of all, no machining is required to install these on your stock cast iron heads! Location: Re: Stock Ford 351W 4bbl dyno numbers. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . For a better experience, please enable JavaScript in your browser before proceeding. Not looking for crazy HP. As with all head installations, check piston-to-valve clearance before final startup. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. What Cam and Springs to Use for GT40 Heads I have a very good running stock 1981 302 in a F100 short box. This is what I recommend to everyone who is doing a budget 5.0 build. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. The only one that's close, is #7. Take the assembly to a machine shop to have it balanced and install it in the block. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. (Image/Harrison Creamery). VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Ive bought wrecking yard SBFs and put 20 lbs of boost to them and spin them to 7000 and made 500 HP with several of them. But dont think that adding a bigger camshaft will make more power. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. Generally expect with a good cam, intake, roller rockers and a good ignition system to see around 300-350 max rear wheel horsepower, depending on what type of dyno you use. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. I'll save the effort and lighten my front end by 50# with aluminum. In review, we rescued a used 5.0L Ford from the boneyard, ported the heads, added a cam, carburetor, intake manifold, and headers, and pulled an amazing 376 hp out of the mix. You'll have to plug the oil hole that is in the engine from the old oil dipstick. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick JEGS High Performance. We've seen what happens from previous Ford experience when power levels above 500 hp tend to either pop head gaskets or saw blocks in half. GT40P heads, what kind of performance do they give? - FourEyedPride.com 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. In order to make Coyote-type power you will need some expensive, high-flow cylinder heads with a short block that can withstand spinning in excess of 6,500 rpm. Junkyard Gt40p Heads-add 30+ Hp to Your 5.0l (For Free?) But don't think that adding a bigger camshaft will make more power. Actually the regular gt40's in either aluminum or iron are the good ones but the gt40p's are only a slight improvement over regular 302 heads. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. Ford Factory 5.0 Performance Cylinder Heads. But the part about a cam replacement possibly being a labor intensive undertaking is correct. If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. +1 I would go with the regular GT40 heads. I'd get the gt40 setup, and put an s trim on it. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. The asterisk HP differences are calculated using Test 1's 294-hp peak. Gt40/gt40p Heads On A 351w Questions - StangNet This is an older thread, you may not receive a response, and could be reviving an old thread. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. With no other changes we gained 25 hp using factory iron heads. Once the headers are in place, then you can consider if you still want more power. The SUV indicated barely 120,000 on the clock, and after yanking the valve covers to judge the engine's condition, Tim Moore instantly made the decision to do the boneyard version of a smash-and-grab. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. We bolted the Ford to the dyno with a set of 158-inch long-tube headers and an 18-inch collector extension to help the low-speed torque, then we fired up the small-block. HAD '82 GT monochromatic (red).black cloth HAVE GT40 Heads On A 289? | Ford Muscle Cars Tech Forum I'm new and I'm currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. I have a 5.0 from a 1992 Mustang in my 65. Purchase a set of flat top pistons (from Ford Motorsport, TRW or Keith Black) with machined valve reliefs and designed to provide 10:1 compression with a 59 to 60 cc combustion chamber cylinder head. We started with a 120,000-mile 5.0L out of a Ford Explorer, removed the EFI and DIS, and pocket ported the stock GT40P iron heads with stock valve sizes. All manufactured using advanced CNC technology for the extreme durability and precision required of the modern canted valve Ford Small Block at power levels around the 1000 mark reached during recent competitions at the EMC and at the strip. This will keep you from dropping your overall static compression ratio and losing power. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. Again, assuming this is a nearly stock 5.0L with stock heads, the Weiand Street Warrior dual plane intake and 600 cfm carburetor, its important to not become overly aggressive and choose a big camshaft. Dec 8, 2011. FORD, SMALL BLOCK 302 HO w/ E7, GT40P & GT40 - Alex's Parts any input is apprecciated:smartass: Thank you for the info, if all I have to worry about is the plugs then I'm in good shape hahaha. fuel injection system . 69-70 302 heads (the ones with the heart-shaped combustion chamber) Any early 289 heads for the chamber size (but you'll have small ports & valves w/all that CR) Flat Ernie, Aug 27, 2011 SHARE POST #8 fordfan289 Member from indiana correct me if Im wrong but cant you use 351c heads and get the same thing as a 302 boss. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. This time around, we chose a shining example of this junkyard art form. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. I was looking at putting on the GT40P heads on. Yes- thank you. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. This is a common mistake with first-time cam buyers who dont necessarily appreciate that the cam is just one component of the overall engine package. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. Along with the heads, we used MAC headers for GT-40P heads. the springs are new stock oem ford. (A starter is a motor, windshield wipers use a motor,electric windows use motors) Any one uses that terminology in my shop will be corrected once, only once. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. Add 40 to 70 HP to your 302 yourself - Factory Five Racing Forum http://vb.foureyedpride.com/showthread.php?t=89153, http://www.facebook.com/groups/233213650060739/, ascMcLaren & Motorsport/Grand Prix IV Capris, RHD and Other International/Export Models, Mods, Maintenance & Mechanical FAQs/Archive, If this is your first visit, be sure to
It took him and yours truly eight hours from start to finish, using air tools and a lift to gain access to the header flanges. check out the. Then why did you port the heads and how do you know if you made an improvement. Mild Build Gt40p This website is using a security service to protect itself from online attacks. A LOT of them do it these days. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. Max hp out of gt 40 heads | Mustang Evolution Forum 302 with GT40 heads | Ford Mustang Forums HiPo manifolds and Ill be good. Car Craft mag. fordfan289, Aug 27, 2011 Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc timing and compression ratio with gt40p heads - Modded Mustang Forums That said there are some better aftermarket options for heads also. As you might expect with more duration, the idle quality dropped significantly but was still able to make 11.5 inches of vacuum at 980 rpm. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. (its not their engine) at the crank. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. Hey Motorheadty,Like your comments,question for ya,I have a 92 convertible,just bought a 5.0 out of a 94 gt that was just freshened up top end,gt40p heads w/new springs etc for the new E303 cam,new FRP roller lifters,Crane 1.7 rockers,hardened push rods,double roller timing set,all put on a bottom end w/104000 miles,needless to say previous owner pulled said engine after 800 miles and now building a 351,I pulled engine down my machinest,putting forged internals in and bolting everything back together,I want to run about a 150 shot N2o,and iam going carb,wondering which intake would be best w/the 150 shot,heard that dual planes might not be the way to go? Jeff Smith: It would have been better to know a little bit more about your combination, but the short answer is yeswith a hydraulic roller camshaft, assuming the lifters are in good shape and the roller wheels show no unusual wear, they can be re-used on a new cam with no danger of adverse effects. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Cant wait to try um out. We then dyno'd the car without the fan to get some consistency and were rewarded with a peak of 316 hp at 5,500 rpm, and 348 lb-ft of torque at 4,000 rpm. JavaScript is disabled. These are some of the pictures I have showing the Explorer manifolds. Common sense would suggest that with the heavy lifting complete and the old cam removed, by not installing the new roller lifters along with the camshaft could be asking for the possibility of trouble just a few thousand miles down the road. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. LOW-BUCK 302 FORD HEAD UPGRADE - YouTube Test 3: Installed the larger Lunati camagain, no other changes. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. Gt40 heads/intake from a jy explorer, leave the . Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Like I said lots of options. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. $700.98. Or, you could invest in a new set of heads that would also do the same job but you can expect to spend quite a bit more money. The GT40P heads flow a lot better than stock 351 heads. Adding the headers may also require a slight increase in secondary (and possibly primary) jetting to ensure the proper air-fuel ratio, but thats also an easy tuning change. gt40p heads on a 289 in a 66 | Vintage Mustang Forums Ported Hurricane Single Plane and custom 750 HP. Dyno results GT40P heads | Vintage Mustang Forums You can have your current 28 oz rebalanced to 50. Stock Ford 351W 4bbl dyno numbers - Don Terrill's Speed-Talk The only way to really make more power is to go with a stroker kit, blower and/or heads. Stock 1989 5.0L HO pistons will work if you can find them. 68stang351 Founding Member May 16, 2002 850 Shop by category. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. Maybe I'll think about a cam swap? The longer duration created a slight loss of torque below 3,300 rpm compared to both previous cams, but beyond that mild loss of power, the bigger Voodo out-powered its smaller cousin, cranking out a peak torque of 355 lb-ft at 4,300 (a gain of 7 lb-ft over Test 2) and charging to a peak horsepower of 376 at 6,000 rpm. A good port job can set you back another $500-$1,000. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Their weak point is that the rotator used on the exhaust valve is very thick. Also, the spark plug angle makes it a pain. The combination of this cam with your intake and headers will produce a very nice street engine. GT40P heads, what kind of performance do they give? that is a healthy budget deal. These are a great head but do need some machining mods to make they really work well. If I get different urges later, Ill pursue those then. Click to reveal 1996-2001 Ford Explorer 5.0L V8 Specifications We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. Im now thinking of adding a cam to match the carb. Some ideas never go out of style. The GT40 and GT40P cylinder heads are highly sought after, but how do they stack up against other cylinder heads, and is it worth it to upgrade the Fox Body's stock heads? The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. The Fora platform includes forum software by XenForo. However I think the opportunity window is slowly closing. The MPH was there to run a little better but the local track is about terrible. No-option stripper- I like strippers. You could run a thinner head gasket as well. They fill that spot between power and budget. Here is my setup. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I had those on my car before I upgraded and they were nice heads. Step 2. Everything fits, use the stock rockers and pushrods. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. The 5.0L with the GT40 head had a 9.0:1 compression, and the 5.0L with the GT40P head had 9.1:1 compression. If you're not a header kind of guy, the repro 289 HIPO manifolds bolt up to the GT40P heads with plenty of spark plug room. The GT40P heads flow a lot better than stock 351 heads. Check my post above. Part of this reason is due to its inherent strength and simplicity, but a lot of it has to do with how little Ford has changed it over the years. Im running stock GT40 heads with stock 4.000 bore on cylinders and a Lunati cam with 256/262; Duration @ .050 (Int/Exh): 213/219; Gross Valve Lift (Int/Exh): .483/.499; LSA/ICL: 112/108. What did the heads flow? never messed with the timing, its at 35* total . Pretty sure that was name, but I could be wrong. There are a couple of reasons for this suggestion. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Long tube headers are a terrific idea, but you need to open up the exhaust side. Definitely going to use my P heads. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. Im new and Im currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. Not bad for off the shelf parts and a stock shortblock. people can stop saying that adding aftermarket cam with stock heads is a waste of time. Posted on May 07, 2014 by promarengine. The only failures Ive had were timing chains and a couple broken rods in a mid 80s 302 with 200,000 miles on it that got about 35 lbs of boost stuffed into it when a pop off valve I bought on ebay failed. PTP Engineering front suspension and 25540R17s all around. Upgrading Fox Body Cylinder Heads - AmericanMuscle.com The engine never huffed oil out of the breathers, and the spark plugs all looked excellent. Limited header choice is certainly a challenge. Nice to see actual dyno results instead of "butt dyno" guesses. It runs smooth but seems lazy. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. I have to agree, the GT40P heads flow better than the GT40 iron heads. Yank a motor out of the junkyard, clean it up, add a camshaft, intake, and a carburetor, and see how much power we can squeeze out of it. All in all, the addition of GT-40P heads to any 5.0 Mustang is a worthwhile venture, especially if you're on a budget (aren't we all) or shooting for the Trophy Stock title. i have a question once i get the gt40p heads from the explorer truck can i also take the exhaust manifolds or headers and fit them in my 66 mustang:?:!?!?!? I'd much rather be able to drive it at 8 or 9/10s of what it can handle. Ford 302W / 5.0L History & Specifications - The Ranger Station Free shipping. 68 Mustang GT/CS Highland Green, PS, PB & Console, C Code w/C4 & 3.55 8 rear, If you aren't using the GT40P's stock, with maybe a spring upgrade and valve job, they aren't worth it anymore. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. With gt40p heads and 289 hipo exhaust manifolds changing sparkplugs is the same as the original 302 heads and manifolds, I use the spark plugs that are recomended for the explorer with gt40p heads and you can use straight or angled boots. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. Instructions on porting the GT-40p heads here. I'm an old school guy (289 in 65 mustang), and I'm just looking into the new 5.0 engine (roller cam) stuff recently. Finally, we exchanged the Explorer's EFI manifold (which is a pretty good manifold in its own right) for an Edelbrock Performer RPM Air Gap intake and a Holley 750-cfm HP-style carburetor.